Pendant for stem-winding watches



(No Model.)

0 A WHITNEY PENDANT FOR. STEM WINDING WATCHES. No. 543,566..

Patented July 30,- 1895.

. lNvENTuw' m" UNITED STATES PATENT OF ICE.

CHARLES A. WHITNEY, OF \VALTHAM, MASSACHUSETTS;

PENDANT FOR STEM-WINDING WATCHES.

SPECIFICATION forming part of Letters Patent No. 543,566, dated July 30,1895.

Application filed October 24, 1894- Serial lilo, 526,815. (lilo model.)

To all whom it may concern:

Be it known that 1, CHARLES A. WHITNEY,

of \Valtham, in the county of'Middlesex and State of Massachusetts, haveinvented certain new and useful Improvements in Winding and SettingMechanism for Watches, of which the following is a specification.

This invention relates to watches in which the winding and hands-settingmechanism are operated by a rotatablebar extending.

through the pendant, said bar being shiftable longitudinally and adaptedto operate the winding mechanism when moved inwardly and thehands-setting mechanism when moved they can be readily shifted from thewinding to the hands-setting position.

The invention consists in the improved mechanism which I will nowproceed to (lescribe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a longitudinal section of a watchcase-pendantprovided with winding and hands-setting devices embodying my invention,the windingbar and crown being shown in their inner or winding position.Fig. 2represents asimilar view, showing the winding-bar and crownshifted to their hands-setting position. Fig. 3 represents a section online 3 3 of Fig. 1, looking toward the left. Fig. 4 represents a sideView of the fixed locking member in the pendant.

The same letters and numerals of reference indicate the same parts inall the figures.

In the drawings, a represents a watchcasependant which contains a fixedlocking member, here shown as a sleeve 5, shown in side elevation inFig. 4-, provided at one end With an external screw-thread, formed toengage an internal thread on the interior of the pendant. Said sleeve ispreferably provided with longitudinal slotsb' extending from itsthreaded end, partially to the opposite end, for the purpose'of makingthe threaded portion resilient and enabling said portion to press firmlyagainst the threaded portion of the pendant and thus prevent liabilityof accidental rotation and displacement of the sleeve after it has beenadjusted to place. I prefer to make four slots 1) in the sleeve 1) forthis purpose. The inner end of the sleeve 1) is provided with a beveledface 12 which constitutes the acting surface or portion of the fixedlocking member.

0 represents the winding-bar, which is rotatable and longitudinallymovable in the pendant, as usual in watches of this class, and drepresents the crown, which is connected with the bar at the outer endof the pendant, and, as usual, is the means for imparting rotation fromthe operators fingers to the winding-bar.

In the embodiment of the invention shown in the drawings. thewinding-bar and crown are made in separate pieces, the bar beingrotatively engaged at all times with the crown, but adapted to movelengthwise to a limited extent independently of the crown.

The crown is provided with a sleeve d',one end of which is screwed tothe crown, as shown in Figsl and 2, while its main portion is providedwith slots d extending from the opposite end of the sleeve nearly to thescrewthreaded base thereof, said slots subdividing the sleeve into aseries of spring-tongues having protuberances or projections d on theirouter ends, which collectively form a contractible shoulder adapted tobearon the beveled face I) of the sleeve or locking member b, saidprojections having beveled rear faces corresponding with the bevel ofthe face Z1 so that when outward pressure is exerted upon the crown thespring-fingers will yield and spring inwardly, and thus permit thecompressibleshoulder d to pass into the sleeve 79, if permitted so to doby the movable looking member hereinafter referred to, the sleeve 1)having an internal shoulder or stop biwhich arrests the compressibleshoulder 01 when the crown and bar reach the position shown in Fig. 2.

The bar 0 has at its outer end a squared portion 7, which fits a squaredorifice extending through the crown, so that the bar is rotativelyengaged with the crown and is adapted to move lengthwise independentlythereof.

Theinner end of the bar 0 is squared, as usual, to engage the usualparts of the winding and hands-setting mechanism of the watch-movement.The bar is provided at an intermediate point with a shoulder 8, which isformed to occupy a position Within the compressible shoulder (Z and toprevent the compression of said shoulder, and thus prevent theabovedescribed outward movement of said shoulder and of the crown. WVhenthe crown and bar are in their winding position (shown in Fig. 1) theshoulder 8 of the bar 0 is held by the outward spring-pressure exertedupon the bar bya spring in the watch-movement, in the usual manner, inposition to prevent the con traction of the shoulder (1 so that when thecrown and bar are in their winding position the crown cannot be pulledoutwardly. The outer end or head 0' of the bar 0 is exposed at the outersurface of the crown and enables the operator to displace the lockingmember 8, and thus force the latter out of the contractible shoulder dso that by exerting an outward pull on the crown said shoulder will passinto the sleeve b until it reaches the stop I), as shown in Fig. 2, thismovement of the crown causing it to bear against the inner side of thehead c, and through the latter move the bar 0 outwardly far enough toeffect the shifting of the connection from the winding to thehands-setting mechanism, the step b arresting the crown and bar in theirhands-setting position. The bar 0 is provided with a peripheral recess 9adjacent to the movable locking memberor shoulder 8, said recess beingformed to receive the spring-tongues of the sleeve d, as shown in Fig.2, when the crown and bar are moved outwardly.

The full-line position of the bar 0 (shown in full lines in Fig. 2) isthe position occupied while the operators thumb is pressed against thebar. \Vhen the pressure is released the bar 0 moves outwardly until theshoulder 8 on the bar abuts against the beveled face of the compressibleshoulder (2 as shown in dotted lines in Fig. 2.

It will be seen from the foregoing that when the crown and bar are intheir winding position they are securely locked in said position andcannot be moved outwardly with out an inward movement of the movablelook-- ing member 8, so that there is no liability of the operatoraccidentally pulling out the crown and shifting the connection from thewinding to the hands-setting while winding the watch.

I claim--- 1. In a watch having a winding and handssetting bar and acrown adapted to rotate said bar and to move it endwise, the improvedmechanism for locking the bar in its winding position, the samecomprising a fixed locking member attached to the pendant, acontractible sleeve attached to the crown and engaged by said fixedlocking member when the crown and bar are in their winding position, anda movable locking member adapted to normally hold the sleeve inengagement with the fixed locking member and movable inwardly from itsnormal position to permit the separation of the sleeve from the fixedlocking member and theoutward movement of the crown, sleeve, and bar.

2. The combination of a watch-case pendant having a fixed lockingmember, a crown having a contractible sleeve adapted to yield inglyengage said locking member when the crown is in its inner position, anda winding and hands-setting bar rotatively engaged with the crown andprovided with a shoulder or movable locking member adapted to normallyhold the sleeve in engagement with the fixed locking member, said barhaving a limited independent endwise movement so that it may be movedinwardly to displace the said movable locking member and permit theoutward movement of the crown, sleeve, and bar.

The combination of a watch-case pendant, a crown having a contractiblesleeve projecting into the pendant, a winding and hands-setting barrotatively engaged with the crown and having a shoulder or movablelocking member, a screw threaded sleeve engaged with the pendant andprovided with a fixed locking member to hold the contractible sleeve,crown, and bar in position for winding and with a stop or shoulder tolimit the outward movement of the eontractible sleeve, crown, and bar,the bar having a limited independent endwise movement so that it may bemoved inwardly to displace its shoulder or locking member and permit theoutward movement of the crown, sleeve, and bar.

4. The combination of a watclrcase pendant internally screw-threaded, athreaded sleeve screwed into the pendant and terminating in alockingface, a crown having a contractible split sleeve projecting into thependant and having projections or enlargements on the ends of its arms,said projections collectively forming a contractible shoulder adapted toengage the locking face in the pendant and prevent outward movement ofthe crown, and a winding and handssetting bar rotatively engaged withthe crown and movable endwise independently thereof, said. bar having ashoulder which normally prevents the contraction of the shoulder on thecrown, and a recess which permits such contraction when the bar is movedinwardly.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 16th day of October, A. D.1894:.

CHARLES A. \VIIITNEY.

lVitnesses:

A. D. HARRISON, RoLLIN ABELL.

